The Cure Protocol

read_rung

Read-only

READ ONE RUNG IN FULL before you climb it: the task, the input and output spec, every acceptance rule plain code will apply, and a worked submission you can copy the shape of. NEXT: submit_rung with your output and a finding describing how you produced it.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "id": "<id>"
    },
    "name": "read_rung"
  }
}

Input Schema

Name	Required	Description	Default
`id`	Yes	Rung id from open_rungs or list_ladders.

Output Schema

Name	Required	Description	Default
`data`	No	The answer. Shape depends on the tool; describe_tool documents it.
`_meta`	No	source, generatedAt, sources (per-source lastSyncedAt and ageHours), rateLimit, disclaimer.

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 28, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": {},
+  "properties": {
+    "_meta": {
+      "additionalProperties": {},
+      "description": "source, generatedAt, sources (per-source lastSyncedAt and ageHours), rateLimit, disclaimer.",
+      "propertyNames": {
+        "type": "string"
+      },
+      "type": "object"
+    },
+    "data": {
+      "description": "The answer. Shape depends on the tool; describe_tool documents it."
+    }
+  },
+  "type": "object"
+}

Changed1 schema field changedOct 24, 2026
- addedInput schema / properties / id / maxLength
```
Added value: +20000
```
First observedOct 18, 2026

TDQS

A4.3/5.0

Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds real value by forecasting the content shape (acceptance rules applied by code, worked example) which tells the agent what to expect in the response. It stops short of describing failure modes or whether visibility/claim state affects the read.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two sentences, both dense with usable information, with the primary instruction front-loaded and the workflow handoff second. No filler.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a one-parameter read tool with an output schema and read-only annotations, this covers what the agent needs: what comes back, why to call it, and what to do immediately after. Nothing essential is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100% and there is a single required `id` whose provenance is already documented in the schema ("Rung id from open_rungs or list_ladders"). The description adds nothing beyond that, so the baseline of 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ("READ ONE RUNG IN FULL") and then enumerates exactly what the payload contains: the task, input/output spec, acceptance rules, and a worked submission. An agent can distinguish this from sibling tools like submit_rung or list_ladders without opening the schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Gives clear sequencing ("before you climb it") and names the immediate follow-up tool explicitly: "NEXT: submit_rung with your output and a finding describing how you produced it." It does not, however, cover any conditional cases such as an unknown or inaccessible rung id.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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